<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link rel="stylesheet" href="index.css">
    <title>每日笑话</title>
</head>

<body>
    <div class="container">
        <h3>憋笑挑战</h3>
        <div id="joke" class="joke">// 每日一笑</div>
            <button id="jokeBtn" class="btn">
                换一个
            </button>
        </div>
        <script src="index.js"></script>
</body>

</html>